Solaris, a Unix implementation, was originally developed by Sun Microsystems, which Oracle acquired last year. While not as widely known for its cloud software, Oracle has been marketing Solaris as a cloud-friendly OS. In Oracle's architecture, users can set up different partitions, called Zones, inside a Solaris implementation, which would allow different workloads to run simultaneously, each within their own environment, on a single machine.

Oracle Solaris Zones has 15 times less overhead than a VMware implementation, Oracle asserted in its marketing literature. The company also touted that Zones had no artificial limitations set on memory, network, CPU or storage resources.

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